deweylite
Chemical Formula:See LIZARDITE-1T / (mixture of LIZARDITE and STEVENSITE)
Familly: Silicates
Status: NR
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Bluish White | | | Mid waves (320 nm): | Bluish White | | | Short Waves (254 nm): | Bluish White | | | | | | |
Other colors LW: | Bluish White , Yellowish White , |
Phosphorescence (in the common meaning of the term) seen by naked eye:
UV Type |
Color |
Intensity |
Observation Frequency |
Short Waves (254 nm): | Bluish White | | |
Main Activator(s) and spectrum:
No data
Best Locality for luminescence(*):
- Hunting Hill Quarry, Rockville, Maryland, USA (deweylite + hydromagnesite);
- Cedar Hill Quarry, Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USA (deweylite + magnesite);
- Chester Co, Pa, USA (light blue phosphorescence SW (De Ment 1947));
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- The Henkel Glossary of Fluorescent Minerals, Dr. Gerhard Henkel, Published by the FMS, 1989 ,
- Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Deweylite
http://webmineral.com/data/Deweylite.shtml
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